If it's not what You are looking for type in the equation solver your own equation and let us solve it.
D( x )
(x^2)/(3*z) = 0
3*z = 0
(x^2)/(3*z) = 0
(x^2)/(3*z) = 0
1/3*x^2*z^-1 = 0 // : 1/3*z^-1
x^2 = 0
x = 0
3*z = 0
3*z = 0
3*z = 0
x należy do R
x belongs to the empty set
((x^2)/(3*z))^-2 = 0
x belongs to the empty set
| X-5.5=145 | | 3(w-6)=-15 | | 99-x=64 | | 6x^2-2xy+5y^2=6 | | 1/2x(x-6) | | 42=2u+10 | | 325.00+5.00x=4000.0 | | -5(y-1)=5 | | 7/2=7x/8-4 | | 11x^2-11y^2=0 | | X+7sqrt(x)-8=0 | | x-6.8=12.19 | | p=100-5/7x | | 25b^2-15b-10=0 | | 6x^3+12x^2+2x+4=0 | | 2x+7x=180 | | 24-97= | | X^4+4x^2-12=o | | 45x^2-45x-20=0 | | e^6x+1=5 | | x^6-x^3=20 | | f(x)=4x^2-9+1 | | 4a-10=a+2 | | 4a-10=b+2 | | -x-7=-3x+9 | | 4x-6=8-3 | | 17x+14+4x-8=174 | | 5(x+14)=6x-13 | | 9a-2=8a-8 | | x^3-6x^2+10x-13=0 | | 11x+22=228 | | -40+3x=-4x+44 |